ATTINY2313-20MUR Atmel, ATTINY2313-20MUR Datasheet - Page 34

• Manufacturer Part Number: ATTINY2313-20MUR
• Description: IC MCU AVR 2K FLASH 20WQFN
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY2313-20MUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 18
• Program Memory Size: 2KB (1K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-WFQFN, Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -

Power-on Reset
34
ATtiny2313
Table 15. Reset Characteristics
Notes:
A Power-on Reset (POR) pulse is generated by an On-chip detection circuit. The detection level
is defined in
POR circuit can be used to trigger the start-up Reset, as well as to detect a failure in supply
voltage.
A Power-on Reset (POR) circuit ensures that the device is reset from Power-on. Reaching the
Power-on Reset threshold voltage invokes the delay counter, which determines how long the
device is kept in RESET after V
when V
Figure 15. MCU Start-up, RESET Tied to V
Symbol
V
V
t
RST
POT
RST
INTERNAL
TIME-OUT
CC
RESET
1. Values are guidelines only. Actual values are TBD.
2. The Power-on Reset will not work unless the supply voltage has been below V
RESET
V
decreases below the detection level.
CC
Power-on Reset
Threshold Voltage
(rising)
Power-on Reset
Threshold Voltage
(falling)
Voltage
Minimum pulse width
on RESET Pin
RESET Pin Threshold
Table
Parameter
(2)
15. The POR is activated whenever V
V
V
POT
RST
CC
t
TOUT
rise. The RESET signal is activated again, without any delay,
T
T
A
V
V
A
= -40 - to +85°C
CC
CC
= -40 to +85°C
Condition
= 1.8 - 5.5V
= 1.8 - 5.5V
CC
0.2 V
Min
CC
is below the detection level. The
(1)
CC
Typ
1.2
1.1
(1)
0.9 V
Max
2.5
POT
(1)
CC
2543L–AVR–08/10
(falling)
Units
µs
V
V
V